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  • How to write a code Newton Raphson code in R involving integration and Bessel function

    - by Ahmed
    I have want to estimate the parameters of the function which involves Bessel function and integration. However, when i tried to run it, i got a message that "Error in f(x, ...) : could not find function "BesselI" ". I don't know to fix it and would appreciate any related proposal. library(Bessel) library(maxLik) library(miscTools) K<-300 f <- function(theta,lambda,u) {exp(-u*theta)*BesselI(2*sqrt(t*u*theta*lambda),1)/u^0.5} F <- function(theta,lambda){integrate(f,0,K,theta=theta,lambda=lambda)$value} tt<-function(theta,lambda){(sqrt(lambda)*exp(-t*lambda)/(2*sqrt(t*theta)))(theta(2*t*lambda-1)*F(theta,lambda)} loglik <- function(param) { theta <- param[1] lambda <- param[2] ll <-sum(log(tt(theta,lambda))) } t<-c(24,220,340,620,550,559,689,543) res <- maxNR(loglik, start=c(0.001,0.0005),print.level=1,tol = 1e-08) summary(res)

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  • Project summary - Source code lines

    - by MartyIX
    I'm looking for a tool that would count the number of files, the number of lines (with or without comments) and possibly other statistics for my project in PHP and JavaScript. Notes: I've already found SLOCCount which seems quite nice. It requires Cygwin. Yes, I can wrote a simple script for basic information but I'm looking for something more complex. Do you know about alternatives for Windows? Thanks!

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  • informatica mapping examples

    - by user223541
    i want to devlope generic mapping for handling data bases errors in Informatica. Can any one give me any examples of such mappings ? Also can u suggent me some resources for informatica samples mappings (livw webiste or links)

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  • Code examples for a wallpaper app?

    - by TERACytE
    I would like to write a C# app that runs like an overlay on the desktop wallpaper. Similar to the way that desktop widgets or Rainmeter(rainmeter.net) runs; behind other apps but on top of the desktop wallpaper. I cannot find any C# examples of this kind of behavior. Can someone point to me to some code? Here is an example of what I am interested in creating: http://jabz.us/uploaded_images/screenCaptureRainmeter.png

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  • Examples of attoparsec in parsing binary file formats?

    - by me2
    Previously attoparsec was suggested to me for parsing complex binary file formats. While I can find examples of attoparsec parsing HTTP, which is essentially text based, I cannot find an example parsing actual binary, for example, a TCP packet, or image file, or mp3. Can someone post some code or pointer to some code which does this using attoparsec?

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  • Code golf: Word frequency chart

    - by ChristopheD
    The challenge: Build an ASCII chart of the most commonly used words in a given text. The rules: Only accept a-z and A-Z (alphabetic characters) as part of a word. Ignore casing (She == she for our purpose). Ignore the following words (quite arbitary, I know): the, and, of, to, a, i, it, in, or, is Clarification: considering don't: this would be taken as 2 different 'words' in the ranges a-z and A-Z: (don and t). Optionally (it's too late to be formally changing the specifications now) you may choose to drop all single-letter 'words' (this could potentially make for a shortening of the ignore list too). Parse a given text (read a file specified via command line arguments or piped in; presume us-ascii) and build us a word frequency chart with the following characteristics: Display the chart (also see the example below) for the 22 most common words (ordered by descending frequency). The bar width represents the number of occurences (frequency) of the word (proportionally). Append one space and print the word. Make sure these bars (plus space-word-space) always fit: bar + [space] + word + [space] should be always <= 80 characters (make sure you account for possible differing bar and word lenghts: e.g.: the second most common word could be a lot longer then the first while not differing so much in frequency). Maximize bar width within these constraints and scale the bars appropriately (according to the frequencies they represent). An example: The text for the example can be found here (Alice's Adventures in Wonderland, by Lewis Carroll). This specific text would yield the following chart: _________________________________________________________________________ |_________________________________________________________________________| she |_______________________________________________________________| you |____________________________________________________________| said |____________________________________________________| alice |______________________________________________| was |__________________________________________| that |___________________________________| as |_______________________________| her |____________________________| with |____________________________| at |___________________________| s |___________________________| t |_________________________| on |_________________________| all |______________________| this |______________________| for |______________________| had |_____________________| but |____________________| be |____________________| not |___________________| they |__________________| so For your information: these are the frequencies the above chart is built upon: [('she', 553), ('you', 481), ('said', 462), ('alice', 403), ('was', 358), ('that ', 330), ('as', 274), ('her', 248), ('with', 227), ('at', 227), ('s', 219), ('t' , 218), ('on', 204), ('all', 200), ('this', 181), ('for', 179), ('had', 178), (' but', 175), ('be', 167), ('not', 166), ('they', 155), ('so', 152)] A second example (to check if you implemented the complete spec): Replace every occurence of you in the linked Alice in Wonderland file with superlongstringstring: ________________________________________________________________ |________________________________________________________________| she |_______________________________________________________| superlongstringstring |_____________________________________________________| said |______________________________________________| alice |________________________________________| was |_____________________________________| that |______________________________| as |___________________________| her |_________________________| with |_________________________| at |________________________| s |________________________| t |______________________| on |_____________________| all |___________________| this |___________________| for |___________________| had |__________________| but |_________________| be |_________________| not |________________| they |________________| so The winner: Shortest solution (by character count, per language). Have fun! Edit: Table summarizing the results so far (2012-02-15) (originally added by user Nas Banov): Language Relaxed Strict ========= ======= ====== GolfScript 130 143 Perl 185 Windows PowerShell 148 199 Mathematica 199 Ruby 185 205 Unix Toolchain 194 228 Python 183 243 Clojure 282 Scala 311 Haskell 333 Awk 336 R 298 Javascript 304 354 Groovy 321 Matlab 404 C# 422 Smalltalk 386 PHP 450 F# 452 TSQL 483 507 The numbers represent the length of the shortest solution in a specific language. "Strict" refers to a solution that implements the spec completely (draws |____| bars, closes the first bar on top with a ____ line, accounts for the possibility of long words with high frequency etc). "Relaxed" means some liberties were taken to shorten to solution. Only solutions shorter then 500 characters are included. The list of languages is sorted by the length of the 'strict' solution. 'Unix Toolchain' is used to signify various solutions that use traditional *nix shell plus a mix of tools (like grep, tr, sort, uniq, head, perl, awk).

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  • remove duplicate code in java

    - by Anantha Kumaran
    class A extends ApiClass { public void duplicateMethod() { } } class B extends AnotherApiClass { public void duplicateMethod() { } } I have two classes which extend different api classes. The two class has some duplicate methods(same method repeated in both class) and how to remove this duplication? Edit The ApiClass is not under my control

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  • Javascript - How to index html code into variables

    - by Fernando SBS
    The webpage has the following source (only copied the important part): <h1>Relatórios</h1> <div id="textmenu"> <a href="berichte.php" class="selected ">Tudo</a> | <a href="berichte.php?t=2">Comércio</a> | <a href="berichte.php?t=1">Reforços</a> | <a href="berichte.php?t=3">Ataques</a> | <a href="berichte.php?t=4">Outros</a> </div> <form method="post" action="berichte.php" name="msg"> <table cellpadding="1" cellspacing="1" id="overview" class="row_table_data"> <thead> <tr> <th colspan="2">Assunto:</th> <th class="sent"> enviada</th> </tr> </thead><tfoot> <tr> <th>&nbsp;</th> <th class=buttons><input name=del value=apagar alt=apagar type=image id=btn_delete class=dynamic_img src=img/x.gif /></th> <th class=navi>&laquo;<a href="berichte.php?s=10&amp;o=0">&raquo;</a></th> </tr> </tfoot> <tbody> <tr> <td class="sel"><input class="check" type="checkbox" name="n1" value="15737030" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15737030">Rio Grande Do Leste ataca lcsanchez da aldeia</a> </div> </td> <td class="dat">hoje 21:33</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n2" value="15736877" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15736877">Rio Grande Do Leste ataca Thabiti da aldeia</a> </div> </td> <td class="dat">hoje 21:32</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n3" value="15736759" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15736759">Rio Grande Do Leste ataca Dionisio</a> </div> </td> <td class="dat">hoje 21:31</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n4" value="15736513" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15736513">Rio Grande Do Leste ataca Aldeia de troakris</a> (nova)</div> </td> <td class="dat">hoje 21:30</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n5" value="15736275" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15736275">Rio Grande Do Leste ataca Thabiti da aldeia</a> </div> </td> <td class="dat">hoje 21:28</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n6" value="15736220" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15736220">Rio Grande Do Leste ataca Aldeia de troakris</a> (nova)</div> </td> <td class="dat">hoje 21:28</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n7" value="15734824" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15734824">Rio Grande Do Leste ataca Austrália</a> </div> </td> <td class="dat">hoje 21:18</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n8" value="15734440" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15734440">Rio Grande Do Leste ataca andrômeda</a> (nova)</div> </td> <td class="dat">hoje 21:15</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n9" value="15730612" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15730612">Rio Grande Do Leste ataca wLG02 KING OF POP</a> (nova)</div> </td> <td class="dat">hoje 20:49</td> </tr> <tr> <td class="sel"><input class="check" type="checkbox" name="n10" value="15730304" /></td> <td class="sub"><img src="img/x.gif" class="iReport iReport1" alt="Ganhou como atacante sem perdas" title="Ganhou como atacante sem perdas" /> <div><a href="berichte.php?id=15730304">Rio Grande Do Leste ataca wLG02 KING OF POP</a> (nova)</div> </td> <td class="dat">hoje 20:47</td> </tr> </tbody> </table> </form> </div> I want to read from the source and assign to a variable the values like: relatorio[0] = berichte.php?id=15730304; relatorio[1] = berichte.php?id=15730612; ... relatorio[9] = berichte.php?id=15737030; How to do that? thanks

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  • Do you have examples of un-helpful/Obscure error messages

    - by Wiretap
    Yesterday I got this error The processing instruction target matching "[xX][mM][lL]" is not allowed when I investigated, it was caused by whitespace at the very start of my XML document. Not difficult to solve, but I was struck with how unhelpful that particular error message was to identifying the actual problem. So what other examples of obscure errors do people have, and are you willing to admit to some of your own making.

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  • What HTTP redirect status should I use to link offsite?

    - by Matthew Scharley
    While randomly browsing my website via Google, I noticed that it was showing up remote redirects as local files. Now this can be both good and bad, but I'm wondering how can I fix this so it doesn't happen? I'm currently using PHP and header('Location: ... which sends a 302 redirect. Looking over the list of HTTP status codes, I'd take a guess that I should be using 303 redirects to redirect offsite. Is anyone able to help me here, and either confirm/deny this, or tell me what I should be doing instead? Obviously, due to me not being able to tell Google to reindex my site on command, there's issues with being able to test this myself...

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  • What are some examples of MemberBinding linq expressions?

    - by michielvoo
    There are three possibilities, but I can't find examples: System.Linq.Expressions.MemberAssignment System.Linq.Expressions.MemberListBinding System.Linq.Expressions.MemberMemberBinding I want to write some unit tests to see if I can handle them, but I don't know how to write them except for the first one, which seems to be new Foo { Property = "value" } where Property = "value" is an expression of type MemberAssignment. See also this MSDN article.

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  • Fibonacci Code Golf

    - by Claudiu
    Generate the Fibonacci sequence in the fewest amount of characters possible. Any language is OK, except for one that you define with one operator, f, which prints the Fibonacci numbers. Starting point: 25 characters in Haskell: f=0:1:zipWith(+)f(tail f)

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  • Large Scale VHDL techniques

    - by oxinabox.ucc.asn.au
    I'm thinking about implimenting a 16 bit CPU in VHDL. A simplish CPU. ADD, MULS, NEG, BitShift, JUMP, Relitive Jump, BREQ, Relitive BREQ, i don't know somethign along these lines Probably all only working with 16bit operands. I might even cut it down and use only a single operand and a accumulator. With Some status regitsters, Carry, Zero, Neg (unless i use a Accumlator), I know how to design all the parts from logic gates, and plan to build them up from first priciples, So for my ALU I'll need to 'build' a ADDer, proably a Carry Look ahead, group adder, this adder it self is make up oa a couple of parts, wich are themselves made up of a couple of parts. Anyway, my problem is not the CPU design, or the VHDL (i know the language, more or less). It's how i should keep things organised. How should I use packages, How should I name my processes and port maps? (i've never seen the benifit of naming the port maps, or processes)

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  • why those chinese indent code so differently?

    - by winston
    currently i am working with some programmer from shanghai i notice they have some coding indentation like these: if(1==1 && 2==2) { a = 3; } else { b = 4; } however i am accustomed to: if (1==1 && 2==2) { a = 3; } else { b = 4; } what do you think? how could i get rid of different coding styles within a single program file?

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  • Examples of good JPA Java Desktop Application

    - by Yatendra Goel
    I have learnt JPA recently. Now I want to use it in one of my commercial product. But before proceeding, I want to see some example JPA Java Desktop applications so as to have a better understanding of using JPA in desktop applications. I have searched google for this but all I found was tutorials on JPA with examples of entities. I need some good real java desktop applications which have used JPA.

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